/*
 * Copyright 2020 StreamSets Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.streamsets.datacollector.aster;

import com.streamsets.datacollector.main.RuntimeInfo;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

public final class AsterUtil {
  private AsterUtil() {
  }

  private static URL convertFileToUrl(File file) {
    try {
      return file.toURI().toURL();
    } catch (MalformedURLException ex) {
      throw new IllegalArgumentException(ex);
    }
  }

  public static List<URL> getAsterJars(RuntimeInfo runtimeInfo) {
    File[] files = new File(runtimeInfo.getAsterClientDir()).listFiles((dir1, name) -> name.endsWith(".jar"));
    return Optional.ofNullable(files).map(f -> Arrays.stream(f).map(AsterUtil::convertFileToUrl).collect(Collectors.toList())).orElse(
        Collections.emptyList());
  }

}
